Battlefront 2 already did get a post-GameSpy patch for renewed multiplayer, FYI (to those who weren't aware).
I have a major soft spot for Battlefront 1 (2004), it was my first game and there's something to be said about the aesthetic and the UI design fitting so well with the universe... but frankly, BF1 (2004) is functionally dated in every metric compared to BF2 (2005).
Better gameplay mechanics? BF2 is quicker, snappier, and (probably?) more balanced. Plus, Starfighters and space combat were just major selling points on their own (isn't that essentially what we complained about Battlefront 1 (2015) not having in the first place?).
Community support? BF2 has more of it, in terms of playerbase and mods.
Don't like the Jedi? I mean, they were in BF1 (2004) as basically just invulnerable bots that did fuck all so them being playable is really only a net-positive, but... you can play without them in BF2 (2005) just by playing in Classic mode!
And if you want to play BF1 (2004) content in BF2 (2005)? Bam, Conversion Pack; literally every map between the two games, plus some extra cut ones for shits and giggles.
I mean, I won't necessarily complain that another game gets some life support, because every game deserves to be preserved. But, it just seems rather redundant considering the sequel exists, and has had support for longer at this point.